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Hexanitrohexaazaisowurtzitane and nitroguanidine cocrystallized explosive and preparation method thereof

A technology of hexanitrohexaazane and isowurtzitane, which is applied in the field of preparation of hexanitrohexaazaisowurtzitane and nitroguanidine eutectic explosives, can solve the problem of difficulty in selecting ratios and solvents, differences in physicochemical properties, CL -20/NQ eutectic explosive has no publicity and other problems, and achieves the effect of good application prospect and high energy density

Inactive Publication Date: 2018-06-01
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difference in physical and chemical properties caused by the difference in the chemical structure and molecular weight of the two, it is difficult to choose an appropriate ratio and solvent to obtain the co-crystal through the conventional solvent method.
There is no disclosure about the preparation of CL-20 / NQ eutectic explosive

Method used

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  • Hexanitrohexaazaisowurtzitane and nitroguanidine cocrystallized explosive and preparation method thereof
  • Hexanitrohexaazaisowurtzitane and nitroguanidine cocrystallized explosive and preparation method thereof
  • Hexanitrohexaazaisowurtzitane and nitroguanidine cocrystallized explosive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Add 40ml of methanol into the three-necked flask, accurately weigh 52mg of nitroguanidine and add it into the there-necked flask, heat up to 45°C under stirring conditions until the nitroguanidine is completely dissolved, and filter to obtain a hot saturated solution. While keeping at 45°C, add 109.5 mg of hexanitrohexaazaisowurtzitane, stir until it is completely dissolved, and continue mixing and stirring for 60 minutes. Then transfer the solution to a beaker while it is hot, stop stirring and cool down to 40°C, keep the temperature for 2 hours, follow the procedure of keeping it warm for 2 hours after each decrease of 5°C, and finally lower it to room temperature 20°C, and put it in a ventilated place for 1-2 hours. Days, solvent volatilization nuclei formed and grew up to precipitate crystals, which were filtered and dried to obtain CL-20 / NQ co-crystals.

Embodiment 2

[0019] Add 80ml of methanol into the three-necked flask, accurately weigh 104mg of nitroguanidine and add it into the there-necked flask, raise the temperature to 50°C under stirring conditions, until the nitroguanidine is completely dissolved, and filter to obtain a hot saturated solution. While keeping at 50°C, add 218 mg of hexanitrohexaazaisowurtzitane, stir until it is completely dissolved, and continue mixing and stirring for 60 minutes. Then transfer the solution to a beaker while it is hot, stop stirring and cool down to 45°C, keep the temperature for 2 hours, follow the procedure of keeping the temperature for 2 hours after each decrease of 5°C, and finally lower it to room temperature 20°C, and put it in a ventilated place for 1-2 hours. Days, solvent volatilization nuclei formed and grew up to precipitate crystals, which were filtered and dried to obtain CL-20 / NQ co-crystals.

Embodiment 3

[0021] Add 40ml of methanol into the three-necked flask, accurately weigh 120mg of nitroguanidine and add it into the there-necked flask, heat up to 55°C under stirring conditions, until the nitroguanidine is completely dissolved, and filter to obtain a hot saturated solution. While keeping at 55°C, add 251 mg of hexanitrohexaazaisowurtzitane, stir until it is completely dissolved, and continue mixing and stirring for 60 minutes. Then transfer the solution to a beaker while it is hot, stop stirring and cool down to 50°C, keep the temperature for 2 hours, follow the procedure of keeping the temperature for 2 hours after each decrease of 5°C, and finally lower it to room temperature 20°C, and put it in a ventilated place for 1-2 hours. Days, solvent volatilization nuclei formed and grew up to precipitate crystals, which were filtered and dried to obtain CL-20 / NQ co-crystals.

[0022] Such as figure 1 Shown is the process flow chart for the preparation of hexanitrohexaazaisowurt...

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Abstract

The invention discloses a hexanitrohexaazaisowurtzitane and nitroguanidine cocrystallized explosive and a preparation method thereof. The preparation method comprises the following steps of firstly, adding nitroguanidine in a methanol as a solvent, raising the temperature to 45-55 DEG C, performing stirring for dissolution, and performing filtering to obtain a nitroguanidine saturated solution; keeping the solution at the temperature of 45-55 DEG C, adding hexanitrohexaazaisowurtzitane in the nitroguanidine saturated solution, and performing stirring for dissolution to obtain a hexanitrohexaazaisowurtzitane and nitroguanidine saturated crystallization solution; then keeping the mixed crystallization solution obtain in the last step at the temperature of 40-50 DEG C, performing mixing and stirring for 30-60min, stopping stirring, gradually descending the temperature to the room temperature, performing still standing for 1-2 days, enabling the solvent to volatilize, enabling a crystal nucleus to be formed and grow, precipitating a crystal, and performing filtering and drying to obtain a CL-20 / NQ eutectic crystal, wherein the ratio of CL-20 and NQ in the obtained eutectic crystal is 1to 2. For the CL-20 / NQ cocrystallized explosive prepared by the preparation method, the thermal behaviors such as melting and decomposition of the explosive are regulated and controlled, effective reduced sensitivity is realized while the obtained cocrystallized explosive keeps relatively high energy density, and the cocrystallized explosive has better application prospect in the field of high-energy insensitive explosive charging.

Description

technical field [0001] The invention belongs to the field of energetic materials, and in particular relates to a preparation method of hexanitrohexaazaisowurtzitane (CL-20) and nitroguanidine (NQ) eutectic explosives. The invention has better performance in high-energy insensitive explosives Application prospect. Background technique [0002] Hexanitrohexaazaisowurtzitane (HNIW, also known as CL-20) is a new type of three-dimensional caged polynitrate ammonium compound. It is currently one of the highest energy and best comprehensive performance elemental explosives. The application of low-signature propellants and high-energy mixed explosives has been deeply and systematically studied. However, there is a common problem in its application process, that is, due to the high sensitivity of CL-20, its application in high-energy low-sensitivity ammunition is limited. As a technology widely used in the modification of drug molecules in the early stage, co-crystal can often achi...

Claims

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Application Information

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IPC IPC(8): C06B25/38
CPCC06B25/38
Inventor 刘可张皋陈智群王民昌栾洁玉潘清徐敏李晓宇张丽涵
Owner XIAN MODERN CHEM RES INST
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